"This mat cannot be used." message appearing on the LCD.
What does it mean?
The mat is one that cannot be used with the function being performed. Replace the mat.
The cutting mats used by this machine have been redeveloped with a different design, type, function, etc.
For details, refer to Important information about Mat.
Perform the necessary operation according to the instructions or the solution described.
If the problem persists, contact the retailer who sold you this machine or the nearest authorized service center.